Which of the following is not a function?
A. The relationship between an item and its cost in a vending machine.
B. The relationship between its side lengths of a square and the area of a square.
C. The relationship between the age and height of students in your class.
D. The relationship between the number of stamps purchased and the total cost.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

i think it might be a but you might want a second opinion

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!